a |
b |
a |
b |
a |
b |
a |
b |
a |
b |
a |
a |
b |
b |
a |
b |
a |
b |
1 |
2 |
a |
b |
| ||||
1×1 |
1 |
2 |
a |
b |
2π |
3 |
2π |
3 |
1 |
5 |
A.60° | B.120° | C.135° | D.150° |
a |
b |
π |
3 |
a |
b |
A.
| B.1 | C.
| D.2 |
OA |
OB |
OC |
a |
b |
a |
b |
a |
b |
a |
b |
a |
b |
A.
| B.
| C.
| D.
|
a |
3 |
b |
a |
b |
a |
a |
b |
A.30° | B.60° | C.120° | D.150° |
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